It was found that the relative hard strata not only formed horizontally but also vertically; and the vertical stratum has a relationship to the hydrodynamics.
研究发现：沿海床剖面不仅存在水平硬层，同时也存在竖直硬层，且竖直硬层与水动力条件有关。
When the fracture exists in the stratum, pressures in parallel direction falls much faster than that in vertical.
当地层中存在裂隙时，平行裂隙方向压力下降比垂直裂隙方向要快得多。
For a full well excavated down to the impervious stratum, the penetrating pattern could be considered as a model of canal network according to the seepage laws of vertical flow.
完整井情况下的锥探灌浆，其渗入型式可按单向渠道网络模型下的竖向渗流形式来考虑。
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